EFFECT OF EXPOSURE TO LOW INCUBATION TEMPERATURE DURING HATCHING PERIOD ON HATCHABILITY AND PRODUCTION PERFORMANCE IN JAPANESE QUAIL (Coturnix Coturnix japonica)

A. Ameen, M.; H. Majeed, S.; Oom,; Z. Na, N.

	EFFECT OF EXPOSURE TO LOW INCUBATION TEMPERATURE DURING HATCHING PERIOD ON HATCHABILITY AND PRODUCTION PERFORMANCE IN JAPANESE QUAIL (Coturnix Coturnix japonica)
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 5, Issue 16, 2011, Pages 0-0
Authors
M. A. Ameen; S. H. Majeed; ; N. Z. Na
Abstract
The experiment was conducted at Ninvah Animal Production Station to study the effect of exposing the egg of Japanese Quail to low incubation temperature 22C at 13 day of embryonic development and 25C. for (zero, 4, 8) hours in factorial experiment 23 and the effect this exposure duration on hatching percentage and embryonic mortality and production performance. The analysis of the data showed there is significant differences at 5% level in the percentage of hatching of fertilized eggs among cooling temperature. The treatment combination of 22C and 4 hours cooling period gave the highest (83.86%) hatching percentage. The cooling temperature of 25C for 8 hours period led to a significant decreases in hatching percentage compared to the control treatment (72.2%). Also it was found that the mortality percentage and the percentage of pips eggs decrease in the cooling temperature of 22C for 4 hours compared to the control (1.1%). The live body weight at different ages, feed consumption and feed conversion ratio. No statistical significant differences were found among treatments. It is concluded that cooling the Japanese Quail eggs to 22C for 4 hours or 8 hours increase hatchability and decreases embryonic mortality. This has an economic benefits.

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